Benchmark Switch Architecture for Contactless Sensing of Substances
A substance, fiducial technology, applied in the field of reference switch architectures, that can solve the problems of measurement and determination errors, inability to distinguish and compensate for stray light, fluctuations, drifts and changes, inability to measure concentrations, etc.
Active Publication Date: 2021-03-09
APPLE INC
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Problems solved by technology
[0005] Although comparisons can determine the concentration and type of species in a sample, at an early stage (rather than after a large number (e.g. tens or hundreds) of sample points have been measured), due to the inability to distinguish and compensate for stray light as well as fluctuations, drift and , measurement and determination results may be erroneous
Additionally, some conventional systems and methods may not be able to measure concentrations at multiple locations within a sample
Those systems and methods capable of measuring concentrations at multiple locations may require complex components or detection schemes to correlate the depth of locations within the sample or the path length of light exiting the sample
Method used
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[0026] In the following description of the examples, reference is made to the accompanying drawings, in which are shown by way of illustrations specific examples that may be practiced. It is to be understood that other examples may be utilized and structural changes may be made without departing from the scope of the various examples.
[0027] Representative applications of methods and apparatus according to the present disclosure are described in this section. These examples are provided only to add context and facilitate understanding of the examples described. It will therefore be apparent to one skilled in the art that the described examples may be practiced without some or all of the specific details. Other applications are possible, such that the following examples should not be considered limiting.
[0028] Various techniques and process flow steps will be described in detail with reference to examples as shown in the figures. In the following description, numerous s...
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Abstract
The present invention relates to a system (600) and method for measuring the concentration and type of species in a sample (620) at a sampling interface. The system (600) includes a light source (602), one or more optics (606, 610, 612), one or more modulators (634, 636), a reference (608), a detector (630), and a controller (640). The disclosed systems and methods are capable of accounting for drift from the light source, one or more optics, and the detector by sharing one or more components between different measurement optical paths. Additionally, by placing one or more modulators between the light source and the sample or reference, the system is able to distinguish between different types of drift and eliminate erroneous measurements due to stray light. Furthermore, by mapping detector pixels and micro-optics to locations and depths in the sample, the system is able to detect the species along various locations and depths within the sample.
Description
[0001] Cross References to Related Applications [0002] This patent application claims priority to US Provisional Patent Application Serial No. 62 / 213,004, filed September 1, 2015, which patent application is hereby incorporated by reference in its entirety. technical field [0003] This patent application generally relates to reference switch architectures capable of detecting one or more species in a sample at a sampling interface, and more specifically, capable of reconstructing one or more optical paths in the sample. Background technique [0004] Absorption spectroscopy is an analytical technique that can be used to determine the concentration and type of substances in a sample at the sampling interface. Conventional systems and methods for absorption spectroscopy can include emitting light at a sample. When light is transmitted through a sample, a portion of the light energy may be absorbed at one or more wavelengths. This absorption can cause a change in the proper...
Claims
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IPC IPC(8): G01J3/42G01J3/433G01J3/447G01J3/02G01J3/32G01J3/36G01N21/27G01N21/47
CPCG01J3/42G01J3/433G01J3/447G01J3/02G01J3/32G01J3/36G01N21/27G01N21/47G01N21/21G01N21/35G01N21/474G01N21/4785G01N21/49G01N2021/4709G01N2021/4778G01N2201/0221G01N2201/12707G01N2201/12723G01J3/0286G01N21/276G02B3/0056G02B21/18G02B21/0004G02B21/086G02B21/361G02B27/0018G02B21/0092G02B26/04
Inventor M·M·坎加斯M·A·阿尔伯雷D·I·西蒙M·J·比邵普J·希伦达尔R·陈
Owner APPLE INC